Wilke



Jan. 10, 1928.

A. WILKE ADJUSTABLE GEAR AND CYLINDER INTERLOCK Filed Feb. 28. 1927 (Eli Arromvgy I that the machine cannot be placed in oper-- Patented Jan. 1Q), i928.

ALFRED 'W'ILKE, OF ALBANY, NEW YORK, ASSIGNOR OF SHE-FOURTH T0 KARL H. WILKE, ONE-FDURTHTO 15. RICHARD'WILKE, AND ONE-FOURTH T0 ROBERT l". T.

W'ILKE, ALL OF ALBANY, NEW YORK.

ADJUSTABLE GEAR AND CYLINDER INTERLOGiK.

Application filed rebruar es, 1927. Serial No. mace.

. My invention relates to safety devices and particularly to safety devices which are adapted for attachment to washing machines, mixing machines, polishing machlnes,

and the like, which comprise a stationary cylinder enclosing revolving mechanism for operating upon articles placed Within the cylinder. Such machines are generallypro- Vided with a sliding door or cover on the side of the cylinder through which the ma: chine is charged, and it is highly desirable that the interior mechanism should be ren dered inoperative when this cover or door is open. It is equally desirable, that the cover or door of such machines cannot be opened without. stopping the machine,and

ation without closing the door.

Many machines of this character are driven by belts running quite close to the end of the machine, and this is particularly mechanism be operated without requiring the operator to swing lllS arm or body '111 the direction of the moving belt. It 18 also desirable that an interlocking mechanism of this character should be such that it is readily adaptable to cylinders of different size.

lVith the attainment of these ends in view, the objects of my invention are to provide a gear and cylinder interlock which may be operated by a direct push or pull away from or toward the front of the machine. Another object of my invention is to provide a device oi": this character which is adjustable to the extentthat it may be attached to cylinders of various machines without requiring a difierent set of parts for every type or size of machine. A further object of my invention is to provide means for accurately adjusting the gear interlock after the device has been attached to the machine.

With these objects in view my invention includes the novel elements and the combinations and arrangements of elements described below and illustrated in the accompanying drawings in which- Fig. 1 is a fragmentary end elevation of a machineof the character described illus== heating the attachment of interlock;

Fig. 2 is a plan view or Fig. 1;'

Fig. 3 is a section of Fig. 1 in the plane 33 showing the driving gear in locked position and the cover unlocked;

Fig. 4; is a section similar to 3 show ing the cover in locked position and the driving gear unlocked;

Fig. 5 is an inverted perspective view, slightly enlarged, of a novel cam mechan1sn1; and

F 1g. 6 1s a slightly enlarged perspective View of the casting which supports the cam.

Referring to the drawings, 1 represents the stationary cylinder provided with the end or head, 2, and the sliding cover, 3. The mechanism within the cylinder, 1, may vary in character and is therefore notshown, but it isto be understood that this mechanism is drivenby the gear wheel, 4. Near each cndof the cylinder a hoop, 5, is providedhaving a portion elevated abovethe surface of the cylinder as shown in Figs.

.3 and/l and which provides a groove or guide, 10, through which the rack is adapted to slide vertically.

The locking lug or rack, 9, may consist of a single casting provided with one or more teeth or projections adapted to interfit with the teeth on gear wheel, 4. To provide for different sized cylinders and gears of difierent diameter the rack, 9,. is provided in the upper side thereof. with threaded openings adapted to receive the bars, 11. These bars maybe made oi? such length that they will fit the largest machines and the upper ends of the bars may be threaded down sufficiently to fit the smallest machines, as shown at 12. The rods, 11. pass through the yoke, 13, and are adjustably secured thereto by means of the nuts, 14, above and below the yoke. It

has heretofore been the practice to cast the rack and a carrier therefor, funct oning similar to the rods, 11, in one piecewhich necesa special rack? and for every the outer end different machine to which it is desired to attach the interlock. By providing an adjustable carrier for the rack it is obviously possible not only to fit every type '01"- mabut to accurately adjustthe interlock 18, in the cover and cylinder, respectively,'

when the cover closed position. The outer end of the finger coacts with the yoke, 13, as shown, so that when the inner end or the finger is depressed to lock the cover, 2 i cor is raised, carrying with it the yoke, 13 and disengaging'the locking lug or ra ll: 9, and the gear, 4. To ad just the rise of the rack, the adjusting screw, 26, and the lock nut, 27, are provided. Slidably mounted upon the top of the casting, 15, is the operating ca'm, 1, provided with the hand grip, 20, and the inclined cam surfaces, 21 and 22., Tire operating cam, 19, is provided with a central slot, 23, adapted to receive a holding-down cap screw, 2-1, which is threaded into the casting, 15. To prevent the operating cam from being jarred either from the locked or unlocked position 1 provide the helical spring, 25, which is compressed between the head of the cap screw, 25, and the top surface or the cam.

hen the parts are in the relative position shown in Figs. 1, 2 and 3 the cover is unlocked and the gear is locked. When the operating cam is pushed in the direction of the arrow shown in F 1, to the position, 19, the cam surfaces, 21 and 22, coactingr with the finger, 16, move it to the position shown in :1 4; whereby the cover is locked and the gear is unlocked. V

I am aware that interlocks of this general character have been used by others and it is to be understood that I no not claim,

as my invention the broad combination here? in disclosed. .1

lily invention being more particularly directed toward providing the adjustable features described in an interlock or this character, and in the novel elements and combinations whereby a direct push and pull method of operation is attained.

This finger is adapted to move Vfhat I claim is m 17 In a gear and cylinder interlock of the character described, the combination with means for actuating the interlock, of a lug, adapted to lock the gear, a carrier tors-aid lug coacting with the actuating mechanism, and means for varying the distance between the actuating mechanism and the lug.

In a and cylinder interlock of the character described, the combination with means for actuating the gear lock, of a lug adapted to lock the gear, a yoke adapted to coact with the-actuating mechanism, and connecting means for the yoke and lug adjustable to vary the distance between said 0011- nected elements.

In a device of the character described, a gear lock comprising a block provided with a projection adapted to interiit the teeth or" said gear, and a carrier for said block comprising a threaded rod adapted to effect a connection of adjustable length between the block and the act ating; mechanism therefor.

"-l. In a device or the character described, a geariork comprising; a block provided with a proiection adapted to interiit the teeth of said gear, a yoke adapted to coact with an actuator for said lock and a connecting means for said block and yoke comprising threaded rods provided with nuts either side of s: id yoke whereby the distance between the yoke and block may be varied.

in ,a gear and cylinder interlock, the combinationwith a supporting element, of a linger lever pivoted thereto adapted to actu the near, lock, and means tor positive lyopcrating the finger lever comprising oppositely inclined cams having a straight line movement and slidably coacting with said finger lever at either side of the pivotal connection.

6. In a gear and cylinder interlock of the character described, an operating element comprising a "flat metal block provided with parallel. dependin port-ions at either side thcreot "forming cam surfaces oppositely inclined to the plane or he block. i

7. A gear and cylinder interlock of the character described comprising the com ration with means for actuating); the interof a lug: adapted to lock the gear, a

carrier for said'lug; coacting with the actuat- V 

